Pipeline controller: plan 2 (hard +, error +50 %), backlog throttle, 2 trajectory workers, stop rules, summaries every 50; budget reserve

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tasks_gen/train/G1049/spec.md

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+# 1. Goal
+A wholesaler buys materials from two suppliers. Each supplier sends a price list.
+The purchasing team needs one merged list. The list shows, for each material, the
+lowest price and the supplier that offers this price.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The class is new. It is in package $TMP.
+- The class does not read a database table. The caller passes the two price lists.
+
+# 4. Contract
+- Create the class {{P}}QUOTE_MERGER in package $TMP.
+- The class is public, final, and has a public constructor without parameters.
+- Public types:
+  * TY_PRICE: packed number, length 11, 2 decimal places.
+  * TY_QUOTE: structure with the components MATERIAL (CHAR 18), SUPPLIER (CHAR 10)
+    and PRICE (TY_PRICE).
+  * TT_QUOTE: standard table of TY_QUOTE with default key.
+  * TY_RESULT: structure with the components MATERIAL (CHAR 18), SUPPLIER (CHAR 10),
+    PRICE (TY_PRICE) and QUOTE_COUNT (integer).
+  * TT_RESULT: standard table of TY_RESULT with default key.
+- Public method MERGE:
+  IMPORTING it_quotes_a TYPE tt_quote
+            it_quotes_b TYPE tt_quote
+  EXPORTING et_result   TYPE tt_result
+            ev_rejected TYPE i.
+- Do not add other public methods.
+
+# 5. Business rules
+1. The method reads all rows of it_quotes_a and all rows of it_quotes_b. The order
+   of the two tables is not important.
+2. A row is invalid if its material contains only blanks, or if its price is zero
+   or negative. Every invalid row increases ev_rejected by one. Invalid rows do not
+   appear in et_result.
+3. All valid rows with the same material belong to one group.
+4. et_result has exactly one row for each group. The PRICE of this row is the
+   lowest price of all valid rows in the group.
+5. The SUPPLIER of this row is the supplier of a valid row that has this lowest
+   price. If more than one valid row has this lowest price, use the supplier that
+   is first in ascending order of the supplier name.
+6. QUOTE_COUNT is the number of valid rows in the group. A row that appears two
+   times counts two times.
+7. Sort et_result in ascending order of material.
+8. If no valid row exists, et_result is empty and ev_rejected is the number of
+   invalid rows.
+9. The method does not change it_quotes_a or it_quotes_b.
+
+# 6. Constraints
+- Release target: SAP_BASIS 816 (ABAP Platform 2025).
+- Coding standards: Clean ABAP. Method length below 40 statements. No global
+  variables. No comment that restates the code.
+- Out of scope: no database table, no CDS view, no report, no function module.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass.
+- Write your own ABAP Unit tests for the class.